162 REPORT ON NATIONAL MUSEUM. 



On liquid carbonic acid in sjenite. 



(Am. Jour, of Science, 1878, xvi, p. 2:54.) 



A short note taken from the author's "Report on the mineralogy and lith* 

 ology of New Hampshire." 



On leucoseue in the New Hampshire diorites. 



(Am. Jour, of Science, 1878, XVI, p. 396.) 



A short note taken from the author's "Report on the mineralogy and lith- 

 ology of New Hampshire." 



On the association of pyroxene and hornblende. 



(Am. Jour, of Science, 1878, xvi, p. 397.) 



A short note taken from the author's "Report on the mineralogy and lith- 

 ology of New Hampshire." 



On a group of dissimilar eruptive rocks in Campton, N. H. 



(Am. Jour, of Science, 1879, xvii, pp. 147-151.) 



Describes five closely adjoining dikes cutting a mica schist in Campton, 

 N. H., which, upon examination, prove to be composed of diabase, olivene 

 diabase, diorite, and syenite. Gives chemical analyses. 



An account of recent progress in geology, for the years 1879 and 1880. 



(Smithsonian Report, 1880, pp. 221-234.) 

 Also published separate in pamphlet form. 



An account of recent progress in mineralogy, for the years 1879 and 1880. 



(Smithsonian Report, 1880, pp. 229-312.) 

 Also published separate in pamphlet form. 



The Albany granite, New Hampshire, and its contact phenomena. 



(Am. Jour, of Science, 1881, xxi, pp. 21-32.) 



Describes the chemical and structural change produced in the eruptive 

 Albany granite, and the adjoiniug argillitic mica schist at their point of con- 

 tact. The rocks were studied both chemically and microscopically. 



An abstract of this paper by H. Rosenbusch was afterward given in the 

 Neues Jahrbuch fur Mineralogie, &c., 1882, i. Band, i. Heft, pp. 464-465. 



On liquid carbon dioxide in smoky quartz. 



(Am. Jour, of Science, 1881, xxi,pp. 203-209.) 



The author finds the smoky quartz of Branchville, Conn., to be particularly 

 rich in cavities, containing carbonic acid in both the liquid and gaseous state. 

 Considers that the motion of these included bubbles is due to changes in 

 external temperature. The paper is supplemented by a communication by 

 Mr. A. W. Wright, giving the results of chemical examinatious of the gases 

 and liquids contained in these cavities. 



On the mineralogical composition of the normal Mesozoic diabases 

 upon the Atlantic border. 



(Proc. U. S. Nat. Mus., 1881, iv, pp. 1^9-134.) 



This paper gives the results of several chemical and microscopic examiua- 

 tions of the rocks, showing that their composition is somewhat more complex 

 than is generally supposed; that two varieties of plagioclase are generally 

 present. The paper was reviewed by Prof. J. D. Daua, in American Jour, 

 of Science, xxii, 3d series, 1881, p. 230. Also reviewed by H. Rosenbusch in 

 Neues Jahrbuch fiir Mineralogie und Gcologie, 1882, i, iii, p. 414. 



